Add ARC64 support

Add patches for GCC and binutils to enable ARC64 support.  We also
update crosstool-ng reference to support building ARC64.

The binutils patches are not a clean and probably break support for
none-ARC platforms currently.  As such we create a unique patch dir
(patches-arc64) to be used when building the ARC64 toolchain.  We
symlink in the gcc and gdb patches and just have a unique binutils
patch for ARC64 in there.

Additionally GDB isn't currently supported on ARC64.

Signed-off-by: Alexey Brodkin <[email protected]>

Author: abrodkin

.buildkite/pipeline-template.yml

@@ -21,6 +21,7 @@ steps:
          14) TARGET="xtensa_intel_s1000";;
          15) TARGET="mips";;
          16) TARGET="cmake";;
+         17) TARGET="arc64";;
       esac
     - ./go.sh $${TARGET}
     - >
@@ -43,7 +44,7 @@ steps:
          cd ../..
          buildkite-agent artifact upload $${TARGET}.$MACHINE.tar.bz2;
       fi
-    parallelism: 17
+    parallelism: 18
     env:
       BUILDKITE_CLEAN_CHECKOUT: "true"
     retry:

README.md

@@ -11,6 +11,7 @@ Currently we build the following toolchains:
 - i586
 - nios2
 - arc
+- arc64
 - arm
 - arm64
 - riscv64

cmake/zephyr/target.cmake

@@ -11,7 +11,14 @@ set(CROSS_COMPILE_TARGET_nios2     nios2-zephyr-elf)
 set(CROSS_COMPILE_TARGET_riscv   riscv64-zephyr-elf)
 set(CROSS_COMPILE_TARGET_mips       mips-zephyr-elf)
 set(CROSS_COMPILE_TARGET_xtensa   xtensa-zephyr-elf)
+
+# ARC uses the same source tree for both ARCv2 & ARCv3 architectures,
+# while toolchain differ significantly and so their cross-compile prefixes
+if(CONFIG_ISA_ARCV3 AND CONFIG_64BIT)
+set(CROSS_COMPILE_TARGET_arc       arc64-zephyr-elf)
+else()
 set(CROSS_COMPILE_TARGET_arc         arc-zephyr-elf)
+endif()
 set(CROSS_COMPILE_TARGET_x86      x86_64-zephyr-elf)
 set(CROSS_COMPILE_TARGET_sparc     sparc-zephyr-elf)
 

configs/arc64.config

@@ -0,0 +1,60 @@
+CT_CONFIG_VERSION="3"
+CT_EXPERIMENTAL=y
+CT_LOCAL_TARBALLS_DIR="${CT_PREFIX:-${HOME}/x-tools}/sources"
+# CT_PREFIX_DIR_RO is not set
+CT_PATCH_BUNDLED_LOCAL=y
+CT_LOCAL_PATCH_DIR="${CT_TOP_DIR}/../../patches-arc64"
+# CT_LOG_PROGRESS_BAR is not set
+CT_ARCH_ARC=y
+CT_MULTILIB=y
+CT_ARCH_64=y
+CT_TARGET_VENDOR="zephyr"
+CT_BINUTILS_V_2_35=y
+CT_NEWLIB_SRC_DEVEL=y
+CT_NEWLIB_DEVEL_URL="https://github.com/zephyrproject-rtos/newlib-cygwin.git"
+CT_NEWLIB_DEVEL_REVISION="4f5997d3c0f9011135e9627dad700c9d64be4a4b"
+CT_LIBC_NEWLIB_TARGET_CFLAGS="-O2"
+# CT_LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE is not set
+CT_LIBC_NEWLIB_IO_LL=y
+CT_LIBC_NEWLIB_IO_FLOAT=y
+# CT_LIBC_NEWLIB_FSEEK_OPTIMIZATION is not set
+CT_LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS=y
+CT_LIBC_NEWLIB_GLOBAL_ATEXIT=y
+CT_LIBC_NEWLIB_LITE_EXIT=y
+# CT_LIBC_NEWLIB_MULTITHREAD is not set
+CT_LIBC_NEWLIB_RETARGETABLE_LOCKING=y
+# CT_LIBC_NEWLIB_WIDE_ORIENT is not set
+# CT_LIBC_NEWLIB_NANO_MALLOC is not set
+# CT_LIBC_NEWLIB_NANO_FORMATTED_IO is not set
+CT_LIBC_NEWLIB_EXTRA_SECTIONS=y
+CT_GCC_V_10=y
+CT_CC_GCC_EXTRA_CONFIG_ARRAY="--with-gnu-ld --with-gnu-as --enable-initfini-array"
+CT_CC_LANG_CXX=y
+CT_COMP_LIBS_NEWLIB_NANO=y
+CT_NEWLIB_NANO_SRC_DEVEL=y
+CT_NEWLIB_NANO_DEVEL_URL="https://github.com/zephyrproject-rtos/newlib-cygwin.git"
+CT_NEWLIB_NANO_DEVEL_REVISION="4f5997d3c0f9011135e9627dad700c9d64be4a4b"
+CT_NEWLIB_NANO_GCC_LIBSTDCXX=y
+CT_NEWLIB_NANO_INSTALL_IN_TARGET=y
+# CT_LIBC_NEWLIB_NANO_IO_C99FMT is not set
+# CT_LIBC_NEWLIB_NANO_IO_LL is not set
+CT_LIBC_NEWLIB_NANO_IO_FLOAT=y
+# CT_LIBC_NEWLIB_NANO_IO_LDBL is not set
+# CT_LIBC_NEWLIB_NANO_IO_POS_ARGS is not set
+CT_LIBC_NEWLIB_NANO_FVWRITE_IN_STREAMIO=y
+# CT_LIBC_NEWLIB_NANO_UNBUF_STREAM_OPT is not set
+# CT_LIBC_NEWLIB_NANO_FSEEK_OPTIMIZATION is not set
+CT_LIBC_NEWLIB_NANO_DISABLE_SUPPLIED_SYSCALLS=y
+# CT_LIBC_NEWLIB_NANO_REGISTER_FINI is not set
+CT_LIBC_NEWLIB_NANO_ATEXIT_DYNAMIC_ALLOC=y
+CT_LIBC_NEWLIB_NANO_GLOBAL_ATEXIT=y
+CT_LIBC_NEWLIB_NANO_LITE_EXIT=y
+CT_LIBC_NEWLIB_NANO_REENT_SMALL=y
+# CT_LIBC_NEWLIB_NANO_MULTITHREAD is not set
+CT_LIBC_NEWLIB_NANO_RETARGETABLE_LOCKING=y
+CT_LIBC_NEWLIB_NANO_EXTRA_SECTIONS=y
+# CT_LIBC_NEWLIB_NANO_WIDE_ORIENT is not set
+CT_LIBC_NEWLIB_NANO_ENABLE_TARGET_OPTSPACE=y
+# CT_LIBC_NEWLIB_NANO_LTO is not set
+CT_LIBC_NEWLIB_NANO_NANO_MALLOC=y
+CT_LIBC_NEWLIB_NANO_NANO_FORMATTED_IO=y

go.sh

@@ -12,7 +12,7 @@ if [ "$TARGETS" == "all" ]; then
 	TARGETS=${TARGETS}" tools"
 fi
 
-COMMIT="6c9f44116fc7deb8637479ac27fde02629ec0a2e"
+COMMIT="dded2f648af7eca10223df7b162a1f19c6757759"
 GITDIR=${PWD}
 JOBS=$(python -c 'import multiprocessing as mp; print(mp.cpu_count())')